Personal computer manufacturers are said to be beating a path to the Hampton Court, Middlesex door of Eidos Plc for its all software video-conferencing coder-decoder. It is promising a prototype of its Software Videophone Codec that will run over the standard public switched telephone network by mid-August, and then make it available OEM. The software is claimed to enable anyone on a local net or with a modem to send video mail to users with similar software, and will cost around $35 when you buy 1m or more copies. Eidos is talking to the top 25 personal computer manufacturers, as well as makers of digital cameras and video cameras.